addLoadEvent(moveElement);
function moveElement(elementID,final_x,final_y,interval) {

    if(!document.getElementById) return false;
    if(!document.getElementById(elementID)) return false;
    var elem = document.getElementById(elementID);
    if (elem.movement) {
        clearTimeout(elem.movement);
    }
    if (!elem.style.left) {
        elem.style.left = "0px;"
    }
    if (!elem.style.top) {
        elem.style.top = "0px";
    }
    var xpos = parseInt(elem.style.left);
    var ypos = parseInt(elem.style.top);
    if (xpos ==final_x && ypos == final_y) {
        return true;
    }
    if (xpos < final_x) {
        dist = Math.ceil((final_x - xpos)/10);
        xpos = xpos + dist;
    }
    if (xpos > final_x) {
        dist = Math.ceil((xpos - final_x)/10);
        xpos = xpos - dist;
    }
    if (ypos < final_y) {
        dist = Math.ceil((final_y - xpos)/10);
        ypos = xpos + dist;
    }
    if (ypos > final_y) {
        dist = Math.ceil((xpos - final_y)/10);
        ypos = xpos - dist;
    }
    elem.style.left = xpos + "px";
    elem.style.top = ypos + "px";
    var repeat = "moveElement('"+elementID+"' ,"+final_x+" , "+final_y+","+interval+")";
    movement = setTimeout(repeat,interval);
}